/*
 * Copyright (C) 2011 The Guava Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
 * in compliance with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */

package com.google.common.util.concurrent;

import com.google.common.annotations.GwtCompatible;

import javax.annotation.CheckForNull;

/**
 * Unchecked variant of {@link java.util.concurrent.ExecutionException}. As with {@code
 * ExecutionException}, the exception's {@linkplain #getCause() cause} comes from a failed task,
 * possibly run in another thread.
 *
 * <p>{@code UncheckedExecutionException} is intended as an alternative to {@code
 * ExecutionException} when the exception thrown by a task is an unchecked exception. However, it
 * may also wrap a checked exception in some cases.
 *
 * <p>When wrapping an {@code Error} from another thread, prefer {@link ExecutionError}. When
 * wrapping a checked exception, prefer {@code ExecutionException}.
 *
 * @author Charles Fry
 * @since 10.0
 */
@GwtCompatible
@ElementTypesAreNonnullByDefault
public class UncheckedExecutionException extends RuntimeException
{
    /*
     * Ideally, this class would have exposed only constructors that require a non-null cause. We
     * might try to move in that direction, but there are complications. See
     * https://github.com/jspecify/nullness-checker-for-checker-framework/blob/61aafa4ae52594830cfc2d61c8b113009dbdb045/src/main/java/com/google/jspecify/nullness/NullSpecTransfer.java#L789
     */

    /**
     * Creates a new instance with {@code null} as its detail message.
     */
    protected UncheckedExecutionException()
    {
    }

    /**
     * Creates a new instance with the given detail message.
     */
    protected UncheckedExecutionException(@CheckForNull String message)
    {
        super(message);
    }

    /**
     * Creates a new instance with the given detail message and cause.
     */
    public UncheckedExecutionException(@CheckForNull String message, @CheckForNull Throwable cause)
    {
        super(message, cause);
    }

    /**
     * Creates a new instance with the given cause.
     */
    public UncheckedExecutionException(@CheckForNull Throwable cause)
    {
        super(cause);
    }

    private static final long serialVersionUID = 0;
}
